Ingredients
Equipment
Method
- Position the oven rack in the middle and heat to 350°F (175°C), then lightly grease a 9×13 inch (23×33cm) glass baking dish with butter or non-stick spray and set aside.
- Spoon the 1 can (21oz / 595g) lemon pie filling into the prepared dish and spread into an even layer reaching all four corners using a silicone spatula — no glass should be visible through the filling.
- In a large mixing bowl using an electric hand mixer or stand mixer with the paddle attachment, beat the 8oz (226g) softened full-fat block cream cheese on medium speed for 90 seconds until completely smooth and lump-free.
- Add the ¼ cup (50g) granulated sugar and beat on medium for 30 seconds until fully incorporated, then add the 1 large room-temperature egg and 1 teaspoon (5ml) pure vanilla extract and beat on low for 15 to 20 seconds only until the egg just disappears — do not overmix.
- Spoon the cream cheese mixture over the lemon layer and spread gently from the center outward using the silicone spatula until the lemon layer is fully covered — do not stir or swirl the two layers together.
- Pour the 1 box (15.25oz / 432g) dry yellow cake mix directly over the cream cheese layer and spread into an even layer using an offset spatula or the back of a large spoon — do not press down or stir.
- Arrange the ½ cup (113g) butter pats in a grid pattern across the surface of the dry cake mix, covering approximately 75–80% of the surface — do not melt the butter before placing.
- Bake on the middle rack at 350°F (175°C) for 45 to 50 minutes until the surface shows deeply browned mounds with lemon-yellow pooling visible in the gaps and the edges have pulled from the glass — the center should still carry a slow heavy wobble when the dish is nudged.
- Remove from the oven and cool on a wire rack or folded kitchen towel at room temperature for a minimum of 30 minutes undisturbed before scooping — do not refrigerate during this cooling period.
- Scoop portions using a large metal serving spoon, plate each scoop, and garnish with a dollop of whipped cream, one or two fresh lemon wheels, and a pinch of finely grated lemon zest.
Notes
- Lemon pie filling: use canned pie filling only — not lemon curd, pudding mix, or jelly. Wrong product = no molten lemon base.
- Cream cheese: full-fat block only, softened 2 hours at room temperature. No microwave shortcut. Cold cream cheese = lumpy layer.
- Cake mix: use dry and unmixed straight from the box. Do not prepare according to package directions.
- Butter: slice into thin pats and arrange in a grid — do not melt. Melted butter = flat uniform crust, no browned mounds.
- Egg: room temperature, 30 minutes out of fridge. Cold egg can cause cream cheese mixture to look curdled.
- Pan: glass 9×13 dish recommended. Dark metal pan: reduce oven to 325°F (165°C) and check at 40 minutes.
- Storage: refrigerate leftovers in a lidded hard-sided container up to 3 days. Pull 20 minutes before serving.
- Freezing: freeze individual scoops wrapped in plastic wrap up to 6 weeks. Thaw overnight in fridge. Texture will be slightly grainy after freezing.
- Make ahead: bake up to 24 hours ahead and refrigerate covered. Cold version is firmer and cheesecake-adjacent — different from the warm molten version.
- Scaling: bake in two separate 9×13 dishes — do not scale into a single larger pan. Leavening in cake mix does not scale linearly.
- Altitude: above 3,500ft reduce oven to 335°F (168°C) and begin checking at 40 minutes.
- Allergens: contains wheat, eggs, dairy. Check cake mix label for additional allergens.
- Tip: warm the lemon pie filling for 20 seconds in the microwave before spreading — it becomes significantly easier to distribute evenly to the corners.